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gao qiang gang han jie jie tou chao sheng chong ji xiao guo dui bi shi yan yan jiu
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Year: Issue:  10
Journal: Journal of Ship Mechanics

Keyword:  超声冲击对接焊试样对比试验残余应力低周疲劳;
Abstract: 文章采用高强度钢对接焊试板,分别开展超声冲击前后残余应力变化和低周疲劳寿命的对比试验研究.试验结果表明:经过超声冲击处理后,焊缝区的残余应力从焊后的拉伸残余应力转化为压缩残余应力,焊接试样的低周疲劳寿命有显著提高,平均提高30%以上,试验验证了超声冲击技术在改善残余应力和提高疲劳寿命上的实用性和有效性.
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